THE ANIMAL KINGDOM

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THE ANIMAL KINGDOM
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What is an Animal?

• Has many cells, no cell walls
• Reproduces sexually
• Develops from an embryo
• Has specialized parts
• Moves
• Is a consumer

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Invertebrates
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Invertebrate Info

• No backbone or skull
• Nerves to control movements
• Groups of nerves called ganglia
• Digest food in a gut

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Bilateral Symmetry
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Radial Symmetry
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Sponges simplest animals
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Cnidarians
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Flatworms
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Roundworms or Nematodes
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Mollusks
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Annelid (segmented) Worms
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Arthropods

• 75 of all animal species!
• Jointed limbs
• Arthropod means jointed foot
• Body Segments
• Exoskeleton
• Brain and compound eye

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ArthropodsCentipedes and Millipedes
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Arthropods Crustaceans
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Arthropods Arachnids
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Arthropods Insects
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Echinoderms
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Sponges the simplest animals
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Why are they animals?

• No symmetry
• No nerves
• No gut
• But.
• Can move (very very slowly)
• Cant make their own food

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How do they eat?

• Phylum Porifera refers to pores
• Water sweeps in
• Collar cells filter food
• Water goes out the top

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Cnidarians
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Form Medusa
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Form Polyp
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Coral

• Builds a skeleton cup around itself made of
  calcium carbonate

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Coral Reef
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Mollusks

• Name 2 mollusks that people eat

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What makes it a mollusk?

• Has a foot and a soft body covered by a mantle
• In most mollusks the mantle secretes a shell

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Gastropods Snails and Slugs
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Bivalves clams and oysters
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Cephalopods Squids and Octopuses

• Smartest of the invertebrates

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Echinoderms

• All are ocean animals that live on the sea floor
• Echinoderm means spiny skinned
• Have an endoskeleton covered with spines
• Have a simple nervous system

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Water pumps

• Help echinoderms move, eat, and breathe
• Tube feet hang on or let go

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Sea Stars
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Brittle Stars and Basket Stars
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Sea Urchins and Sand Dollars
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Sea Cucumber
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Chordates

• Vertebrates
• Have a brain and a spinal cord

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Fish
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Reptiles
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Amphibians
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Birds
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Class Mammalia - Mammals